One of the most common bladder conditions is urinary incontinence. Many other medical conditions may cause a bladder to leak or lack the ability to hold in urine. Bed-wetting is a common problem in children. Other conditions and issues that affect the bladder are cystitis (painful inflammation of the bladder), urinary stones, blood in the urine, pain upon urination, and urinary retention. The latter occurs when the bladder is blocked and unable to empty itself properly.

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